Cable-control device



March 4, 1930. R H BEAUMONT 1,749,060

CABLE CONTROL DEVI CE Filed Dec. 24, 1928 F/G 2 Mms/V706 i /ver/ ffaamorz/ `:a drums 2 and 3.

- UNITED STATES y EoBEE'r H. BEAUMONT, 0E RADNoE,v PENNSYLVANIA, AssmNon 'ro E. H, BEAuivroN'r' PATENT OFFICE:

COMPANY, OF PHILADELPHIA, 'PENN'SYIiVANIA,V A" CORPORATION 0F PENNSYL- f VANIA CABLE-CONTROL DEVICE vThe/object of' this invention is to provide a control for the driving drums of a cable and is particularly adapted for use on driving drums of'a cable drag scraper or may be '5 used in connection with vthe driving drums of anyjmachine employing a cable the ends Vofl which are` fastened to separate driving y drums. The invention consistsy essentially in] employing Y electromagnetic clutches between the actuating motor and the cable drivning drums driven thereby. v y Another `feature'of my invention isthe means whereby one of the clutches facts as a'brake when it is not in full connecting position.

. In' the prior art similar driving drums were controlled by mechanical friction clutches ofthe standard cone or band type. These clutches were either; operated manuallyy by zofmeans of interlocking levers or actuated by a motor throughy a linkage `of levers and remote electrical control provided for the motor. LThe present invention makes possible the direct controlofthe clutches themselves from va remote position wherever convenient.`

For a more complete exposition of my invention reference may be had to the annexed specification and drawing.y In the drawings,

. Figure 1 is a plan view of the cable 'driv- "eafing'drums and the motor for actuating them.

Fig. 2 is an electrical diagram of the conitrol means for the magnetic clutches. g l:Referring to Figure 1, Y 1f is the electric tor which drives the The motor shaft has mounted thereon ypin'- ion 4which` drives gear5wh`ich is fast on shaft 6. Shaft 6 is carried in bearings (each lbearing being indicated on the-drawing by anX) land has fast thereonelectric magnetic y,clutch halves 7 and8." Pinions 9 and 10 and the corresponding magnetic clutch halves 11 1 andv 12 are free to rotate on shaft 6. Brushes 13 and 14 have attached thereto the electric lead-in wires (indicated as pigtails in Figure l, 1)Vwhich leadthe currents to clutches 7-11 yand 8-12, respectively. Drum 2 is keyed to shaft 15T and drum 3 ,is keyed to shaft 16.'

These shafts are carried in bearings' (each l i bearing being indicated on the drawing by an l Pinion 9 drives gear 17 which'is looseon shaftjlfwhich, in turn, drives gear 18fkeyed to' shaft 16, thereby driving drum 3. Pinion. 10` drives gear 19 which is keyedv to Ishaft 15 and which, therefore, drives drum 2. Y

Thus it will be seen that when clutch 7 -11 is magnetizeddr'um 3 `will be driven by motor 1 through the gear train 4, 5, 9, 17 and 18.

When Vclutch 8-12 is energized motor 1 drives drum 2 through the gear train 4, '5, l() and l19.v Myinvention may either be used in this manner or the clutches may be electrically intercontrolled, as explained below to provide that when one clutch is fully energized the other clutch will be weakly energized so that the weakly energized clutch acts `as a brake on the drum controlled thereby to prevent its paying off an excess of cable.

One means for attaining this electrical interconnection is illustrated in the diagram vin Figure 2. Coils 7 and. 8 representl the `to Contact with thestationary contacts 23,

24, 25 and 26 respectively. Coils 7 and 8 are controlled by starters 27 and 28 having a plurality .of lrotatable fingers 29 and 30 ac tuated by coils 31 and 32 so yas to rotate into contact with the starter resistances 27 and 28 and thereby to shunt out varying amounts of these resistances. In series with coils 7 and 8 and with Vstarters 27 and 28 are rheostats 33 and 34 respectively. These rheostats are Variable and are provided to make an adjustment as wear occursin the electromagnetic clutches. y Coils 7 and 8 and resistances 27, 33, and 28, 34 respectively are controlled by `switches 35 and 36 in series therewith. These switches are controlled by coils 37 and 38. -By tracing through the circuits of this diagram it will be seen that when either of the movable contact members 21 yor 22 is placed in contact with the stationary contacts one of the clutch coils 7 or 8 is fully energized because one of the starter coils 31 or 32 is energized to shunt out allthe resistance 27 or 28. Theother coil 7 or 8 is weakly enaai ergized through the resistances in series to act as a brake'for the drum controlled there- It will be obvious to those skilled in the 4 art to which the invention relates that modi#l iications may be made in details ,of construction and arrangement and matters of mere form without departing ,from the spirit of the invention which is not limited'to Vsuch 5 'Y matters or otherwise thanthe prior` art and the appended claimmay require. Y

I claim: K'

Av cable control device comprising in com#v bination a driving motor, two separate cable drumskeyed to two separate shafts, a third V shaft having twodriving members for two electricclutches fast thereon and twodriven members .of two electric clutches rotatable thereon,v pinion members rotatable onsaid .third mentioned shaft adapted tobe driven 'by said electric clutch members, gear trains between said first and second mentioned shafts and said pinions on Vsaid/third men-'f tioned shaft for driving said drums, means fordriving saidthird mentioned shaft from said motor, and brushes for carrying current I to said clutches.

ROBERT BEAUMONT.

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